Improvements for Evaluating Handover Failures

1. A user equipment comprising a transceiver configured to provide a connection with at least a source base station, and a processor configured to receive from the source base station, via the transceiver, mobility information comprising an identifier of one or more conditions that trigger a handover of the user equipment from the source base station and to store the mobility information; the processor further configured to detect a connection failure associated with a triggered handover from the source base station to a destination base station and, in response to the connection failure being detected, to provide the mobility information including the identifier to the source base station via the transceiver upon re-connecting after the connection failure.

2. The user equipment according to claim 1 , wherein the mobility information is received by the user equipment in a handover initiation message for initiating the handover.

3. The user equipment according to claim 1 , wherein the transceiver is configured to send user equipment type information to the at least one source base station in a connection reconfiguration message.

4. A first radio network node comprising: a transceiver configured to provide a connection to at least a second radio network node, and a processor configured to receive and send inter-node messages related to a failure analysis process, the processor of the first radio network node configured to receive from the second radio network node, via the transceiver, a failure indicating message containing mobility information comprising an identifier of one or more conditions that triggered a handover of a user equipment from the first radio network node to the second radio network node, where the handover resulted in a connection failure by the user equipment to the second radio network node, and the processor further configured to analyze a cause for the connection failure based at least on the received mobility information, where neither the first nor the second radio network node is a user equipment.

5. The first radio network node according to claim 4 , wherein the processor is configured to analyze the cause for the connection failure further based on user equipment type information that the first radio network node received from the user equipment in a connection reconfiguration message.

6. The method of claim 5 , wherein the user equipment type information comprises mobility type of the user equipment.

7. The method of claim 5 , wherein the user equipment type information comprises service class of the user equipment.

8. The method of claim 5 , wherein the mobility information comprises handover trigger information.

9. The first radio network node according to claim 4 , wherein the mobility information identifies the conditions that triggered the handover via a handover information identifier being one of a plurality of information identifiers configured for different handover conditions.

10. The first radio network node according to claim 9 , wherein the failure indicating message further comprises a user equipment type identifier being one of a plurality of user equipment type identifiers configured for different kinds of user equipments.

11. A method comprising receiving, by a user equipment from a source base station, mobility information that comprising an identifier of one or more conditions that trigger a handover of the user equipment from the source base station, storing the mobility information; detecting a connection failure associated with a triggered handover from the source base station to a destination base station and, in response to the connection failure being detected, the user equipment providing the mobility information including the identifier to the source base station upon re-connecting after the connection failure.

12. The method according to claim 11 , wherein the mobility information is received in a handover initiation message for initiating the handover.

13. The method according to claim 11 , the method further comprising: the user equipment sending user equipment type information to the source base station in a connection reconfiguration message.

14. A method for operating a first radio network node, the method comprising: receiving and sending inter-node messages related to a connection failure analysis process, receiving at the first radio network node from a second radio network node a failure indicating message containing mobility information comprising an identifier of one or more conditions that triggered a handover of a user equipment from the first radio network node to the second radio network node, where the handover resulted in a connection failure by the user equipment to the second radio network node, and analyzing at the first radio network node a cause for the connection failure based on at least the mobility information; where neither the first nor the second radio network node is a user equipment.

15. The method according to claim 14 , the method further comprising: the first radio network node analyzing the cause for the connection failure further based on user equipment type information received from the user equipment in a connection reconfiguration message.

16. The method according to claim 14 , wherein the mobility information identifies the conditions that triggered the handover via a handover information identifier being one of a plurality of information identifiers configured for different handover conditions.

17. The method according to claim 16 , wherein the failure indicating message further comprises a user equipment type identifier being one of a plurality of user equipment type identifiers configured for different kinds of user equipments.

18. The method according to claim 14 , wherein: the method further comprises sending, prior to receiving at the first radio network the failure indicating message, a message from the first radio network node to the second radio network node, the message comprising the mobility information, the receiving at the first radio network node from the second radio network node the failure indicating message contains the mobility information and indicates the connection failure by the user equipment to the second radio network node.

19. The method according to claim 18 , wherein: the mobility information identifies conditions that triggered the handover via a handover information identifier being one of a plurality of information identifiers configured for different handover conditions, the method further comprises matching the handover information identifier with an actual handover trigger, and analyzing at the first radio network node the cause for the connection failure based on at least the mobility information uses the actual handover trigger.

20. A non-transitory computer readable memory tangibly storing a computer program that when run on at least one processor causes a device to perform a method according to claim 14 .